Wastewater Collection


- Centralised and decentralised wastewater collection, for sewage and storm water run-off from public grounds and industry, including storm water harvesting and groundwater recharge
- Hydrodynamic simulation and modelling of sewer networks, including simulation of discharge loads from storm water-tank overflow (especially for COD)
- Rehabilitation and renewal of existing sewer systems
- Engineering and design for new connections in new housing and industrial settlements
- General wastewater management plans (Generalentwässerungspläne, GEP), according to public standards
- Wastewater management concepts (Wastewater treatment concept) according to public standards


Project Examples



Sewer renovation, repairs and renewal in Emmerich at the Rhine
- Client: Gelsenwasser AG
- Duration: 2005 - 2011
- Several single measures with open trench construction (4,0 km), inliners (3,5 km), compact pipe, wrapped-pipe relining, flush boring (310 m)
- Services provided: All parts of engineering design from base design to final documentation, including construction supervision etc.
- More informations about single measures...


Renewal of the main sewer "Bommern" with manned pipe jacking in Witten, Germany
- Client: Wastewater Utility of the City of Witten (ESW)
- Duration: 2001 - 2004
- Renewal of the main trunk under a city main road (diameter DN 1400, length 1,100 m), mainly with manned pipe jacking; all soil conditions including floating sand, rocks, clay and gravel existing, which had to be handled; Construction of 135 house connections, mainly in underground (no dig) technology
- Services provided: Design, tender document and procurement organisation, construction and supervision,
co-ordination of blasting operations construction supervision


Asset analysis and evaluation, Dresden
- Client: Wastewater Utility of the City of Dresden
- Duration: 2003 - 2004
- 1,700 km of sewer length, 650,000 p.e.
- Services provided: Analysis and evaluation of sewer assets within the municipal sewer line, following engineering standards as well as requests from the financing banks


Construction of a wastewater pressure pipeline in Dörnberg-Ehlen, Germany
- Client: Municipality of Habichtswald, Hessen
- Duration: 1998 - 2003 plus after-sales service
- Construction of a new wastewater pressurised pipe (length 3.8 km, diameter DA 280) including pumping station and 2 pumping stations feeding house connections
- Services provided: Design, tender, procurement organisation, construction supervision and general consultancy